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Conair 0.25 to 1.5 ton, User Manual, Page: 21 / 44

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Conair 0.25 to 1.5 ton User Manual Download Page 21

Page: 21

UGH020/0301

VL Series Portable Chillers, 0.25 to 1.5 Tons

C.

Restriction to refrigerant flow in refrigeration circuit.

D.

Poor heat transfer in evaporator tank because (1) percentage of
glycol to water is too high and (2) scaled tubes in evaporator tank
(chemically descale).

E.

Low flow through evaporator tank due to (1) process flow restricted
or (2) glycol foaming.

Summary of Contents for 0.25 to 1.5 ton

Page 1: ...Service 800 458 1960 814 437 6861 www conairnet com The Conair Group Inc One Conair Drive Pittsburgh PA 15202 Phone 412 312 6000 Fax 412 312 6227 VL Series 0 25 to 1 5 ton models UGH020 0301 Installa...

Page 2: ...er UGH020 0301 Serial number s Model number s DISCLAIMER The Conair Group Inc shall not be liable for errors contained in this User Guide or for incidental consequential dam ages in connection with th...

Page 3: ...not start 20 4 2 Pump will not start 20 4 3 Compressor will not start 20 4 4 Unit shuts down on high pressure switch 20 4 5 Unit shuts down on low pressure switch 20 5 0 MAINTENANCE 23 5 1 Warranty s...

Page 4: ...VL Series Portable Chillers 0 25 to 1 5 Tons UGH020 0301 Page 4 THIS PAGE INTENTIONALLY BLANK...

Page 5: ...Page 5 UGH020 0301 VL Series Portable Chillers 0 25 to 1 5 Tons 1 0 GENERAL 1 1 UNIT LOCATION 1 2 EFFICIENCY 1 3 SAFETY 1 4 CLEAN AIR ACT 1 5 MISCELLANEOUS...

Page 6: ...800 458 1960 1 2 EFFICIENCY A Long term efficiency of operation is largely determined by proper maintenance of the mechanical parts of the unit and the water quality Conair recommends filtering where...

Page 7: ...to the prohibition set forth in the preceding paragraph 1 5 MISCELLANEOUS A The purpose of the unit is to circulate temperature stabilized fluid through your process resulting in process temperature...

Page 8: ...VL Series Portable Chillers 0 25 to 1 5 Tons UGH020 0301 Page 8 THIS PAGE INTENTIONALLY BLANK...

Page 9: ...Page 9 UGH020 0301 VL Series Portable Chillers 0 25 to 1 5 Tons 2 0 INSTALLATION 2 1 GENERAL 2 2 TO AND FROM PROCESS CONNECTIONS 2 3 UNIT DRAIN 2 4 AIR COOLED CONDENSER 2 5 ELECTRICAL CONNECTION...

Page 10: ...on the mold or process B Connect the chiller s from process connection the water out manifold at the mold or process C Process water piping circuitry should be designed to avoid an excessive use of e...

Page 11: ...temperatures between 60 F and 95 F for efficient operation Operating above 95 F may result in elevated condensing pressures and eventual shut down on the high pressure safety switch Check with the Con...

Page 12: ...stomer supplied fused power disconnect device The fused disconnect device shall be sized and installed according to the unit s power supply requirements and local electrical codes C CONTROL CIRCUIT WI...

Page 13: ...3 0 OPERATIONS 3 1 GENERAL 3 2 START UP OPERATIONS PROCEDURE 3 3 INSTRUMENT OPERATION 3 4 SHUT DOWN DISCONNECT SEQUENCE Page 13 UGH020 0301 VL Series Portable Chillers 0 25 to 1 5 Tons...

Page 14: ...g setpoint selection and adjustment and feature explanations 3 4 Shut down procedure follow this segment to shut down the unit This segment includes information on system cool down shut down electrica...

Page 15: ...red 7 Process flow is adjusted according to the pump motor amperage This rating can be found on the pump motor data plate a With all process valves fully open and with the pump motor operating check a...

Page 16: ...normally set at the lowest value recommended for the sensor 3 HS1 higher set Similar to LS1 however setting an upper limit for the setpoint 4 od output delay This provides a delay selection for the o...

Page 17: ...alue of parameters Lci and Hci must be multiplied by 10 b On all versions if a unit is changed from without decimal point to with decimal point all parameter values expressed in degrees will automatic...

Page 18: ...SHUT DOWN DISCONNECT SEQUENCE A PRECAUTIONS WARNINGS 1 The operator must precisely follow all shut down procedures outlined in this manual If the operator fails to do so an unsafe condition can devel...

Page 19: ...ries Portable Chillers 0 25 to 1 5 Tons 4 0 TROUBLESHOOTING 4 1 UNIT WILL NOT START 4 2 PUMP WILL NOT START 4 3 COMPRESSOR WILL NOT START 4 4 UNIT SHUTS DOWN ON HIGH PRESSURE SWITCH 4 5 UNITS SHUTS DO...

Page 20: ...3 COMPRESSOR WILL NOT START A Safety switch open unsafe condition exists consult safety switch section in this manual B Windings overheated over temperature switch on compressor tripped C Circuit brea...

Page 21: ...o refrigerant flow in refrigeration circuit D Poor heat transfer in evaporator tank because 1 percentage of glycol to water is too high and 2 scaled tubes in evaporator tank chemically descale E Low f...

Page 22: ...VL Series Portable Chillers 0 25 to 1 5 Tons UGH020 0301 Page 22 THIS PAGE INTENTIONALLY BLANK...

Page 23: ...Page 23 UGH020 0301 VL Series Portable Chillers 0 25 to 1 5 Tons 5 0 MAINTENANCE 5 1 WARRANTY SERVICE PROCEDURE 5 2 PERIODIC PREVENTATIVE MAINTENANCE 5 3 SPECIAL MAINTENANCE 5 4 PUMP REPAIR...

Page 24: ...e warranty Conair will advise on the repair and recommend available service contractors C Conair manufactures a complete line of heat transfer equipment It is of the utmost importance that Conair have...

Page 25: ...accomplished by a certified refrigeration technician 1 Vacuum check compressor 2 Addition of compressor oil 3 Addition of refrigerant 4 Repair of a refrigerant leak 5 Adjustment of super heat 6 Changi...

Page 26: ...VL Series Portable Chillers 0 25 to 1 5 Tons UGH020 0301 Page 26 THIS PAGE INTENTIONALLY BLANK...

Page 27: ...Page 27 UGH020 0301 VL Series Portable Chillers 0 25 to 1 5 Tons 6 0 COMPONENTS 6 1 WATER SYSTEM 6 2 REFRIGERATION SYSTEM...

Page 28: ...ent color is normally green If the color of the element is chartreuse or yellow the system has been contaminated with moisture In such case the filter drier must be replaced The replacement of the fil...

Page 29: ...Page 29 UGH020 0301 VL Series Portable Chillers 0 25 to 1 5 Tons 7 0 RELATED DRAWINGS 7 1 ELECTRICAL DRAWING TYPICAL 7 2 CIRCUIT SCHEMATIC...

Page 30: ...EEN 6 5 5 11 11 5 11 11 DUAL HIGH LOW PRESSURESTAT 13 13 5 3 1 6 8 7 9 10 ELIWELL 902T TYPE J THERMOCOUPLE 7 7 8 8 9 10 9 10 BLU BLU YEL BLU 24 VAC SECONDARY 230 1 60 PRIMARY BLK WHT BLK RED BLK YEL B...

Page 31: ...MATIC 12 10 11 9 8 7 6 5 4 3 1 2 ITEM DESCRIPTION 1 Compressor 2 Air cooled condenser 3 Liquid receiver 4 Filter drier 5 Refrigerant sight glass 6 Expansion valve 7 Evaporator 8 Pump 9 To process conn...

Page 32: ...VL Series Portable Chillers 0 25 to 1 5 Tons UGH020 0301 Page 32 THIS PAGE INTENTIONALLY BLANK...

Page 33: ...5 Tons 8 0 APPENDIX 8 1 SPECIFICATIONS 8 2 OPERATION BELOW 45 F 8 3 WATER QUALITY CONTROL 8 4 INHIBITED PROPYLENE GLYCOL 8 5 CHILLER CAPACITY AND DERATE CHART 8 6 PRESSURE TEMPERATURE CHART FOR R 22...

Page 34: ...air representative for the most current information MODEL VLA 25 VLA 33 VLA 5 VLA 75 VLA 1 VLA 1 5 Performance characteristics Capacity tons 0 25 0 32 0 41 0 70 0 98 1 35 Compressor Hp kW 0 25 0 19 0...

Page 35: ...basis to determine the mixture strength according to freeze point The freeze point temperature should be 25 below the lowest required setpoint Water will evaporate from the mixture and if you continu...

Page 36: ...ts adjustments are made by removing the cover and rotating the selector dial with a screwdriver Electronic freezestats are adjusted through the setup parameters via the instrument control panel 3 The...

Page 37: ...a process temperature below 48 F Freeze protection is required so ice crystals do not form and cause severe damage to both the water and refrigeration system B CHOOSING THE PROPER GLYCOL 1 For getting...

Page 38: ...the heat transfer surfaces and reduce cooling efficiency of the system These silicates have shown to significantly reduce the lifetime of pump seals E MAINTENANCE RESPONSIBILITY 1 A hygrometer should...

Page 39: ...is required Consult factory for chiller operation below 20 F Ambient conditions affect air cooled chiller operation and capacity Standard rating is at 95 F entering air temperature For ambient air con...

Page 40: ...0 F 85 F 90 F 95 F 100 F FREON PRESSURE 68 76 84 93 100 112 122 132 144 156 168 182 196 THESE PRESSURE TEMPERATURE RELATIONSHIPS ARE IN AN AT REST SATURATED CONDITION FOR EXAMPLE IF THE UNIT HAS BEEN...

Page 41: ...Page 41 UGH020 0301 VL Series Portable Chillers 0 25 to 1 5 Tons 8 7 USEFUL ENGINEERING FORMULAS...

Page 42: ...LER EWPC 902T Type J 4714350 Pump motor 1 2 HP 1725 RPM 230 1 60 3K090 6206498 Thermocouple Type J ungrounded SP 498J A4 B48 6214050 Procon pump CB2507XH AMP 1113 6648300 Relay GL7 2A TUBJ CB 230 volt...

Page 43: ...ollowing checklist before calling Conair Make sure you have all model serial and parts list numbers for your particular equipment Service personnel will need this information to assist you Make sure p...

Page 44: ...l exercise one of the following options Inspect the equipment and perform alterations or adjust ments to satisfy performance claims Charges for such inspections and corrections will be waived unless f...

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